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The focus of polynuclear aromatic hydrocarbons (PAH) in soil is set by first extracting the PAHs with methylene chloride. The extract is diluted, if necessary, as well as PAHs separated by HPLC employing a UV/Vis or fluorescence detector. Calibration is obtained utilizing one or more external requirements. In a typical analysis a two.013-g sample o

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It is suggested that trial partitioning procedures be performed to determine the precise HPLC technique that would supply satisfactory separation.However, some elements could have weak UV chromophores if UV detection is getting used or be totally retained to the liquid chromatography column. For the detection on the parts, a diode array and fast sc

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